In the coatings industry, the role of additives is crucial, especially organosilicon additives. Most of the additives used in coatings are surfactants, which work by lowering the surface tension at the gas-liquid, liquid-solid, or gas-solid interfaces, achieving effects like leveling, defoaming, dispersion, and improving adhesion. Organosilicon compounds, due to their low surface tension and high surface activity, are widely used in coating systems and are an essential type of coating additive.

Organosilicon additives in coatings can be mainly classified into two categories based on their chemical composition: silanes and silicones. Silanes are small-molecule compounds that are primarily used in coatings as adhesion promoters, crosslinking agents, and dispersants. The main role of silanes is to improve the adhesion between the coating and substrate, as well as enhance the mechanical strength and weather resistance of the coating film. Silicone-based additives mainly consist of modified silicones, and by adjusting the relative molecular weight of the additives, modifying the types and content of the R groups, and the types of terminal functional groups, additives with various performance characteristics can be obtained. For example, modified silicone additives are used to improve the flow properties, defoaming effect, and high-temperature resistance of coatings.

Organosilicon additives not only enhance the functionality of coatings but also improve the surface gloss, uniformity, and stability of the coating, thereby enhancing the overall performance of the coating and making it more effective in various applications.

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